diff --git a/CHANGELOG.md b/CHANGELOG.md
index d3d8edb..7ada3cf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.4.0](https://github.com/allisson/psqlqueue/compare/v0.3.0...v0.4.0) (2024-01-03)
+
+
+### Features
+
+* add prometheus metrics ([#12](https://github.com/allisson/psqlqueue/issues/12)) ([473c399](https://github.com/allisson/psqlqueue/commit/473c399ba45ec8e7132a2a085b8658ad5dadad52))
+
 ## [0.3.0](https://github.com/allisson/psqlqueue/compare/v0.2.0...v0.3.0) (2024-01-03)
 
 
diff --git a/version.txt b/version.txt
index 0d91a54..1d0ba9e 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-0.3.0
+0.4.0